Duplicating attachment for typewriters



Aug. 30, 1932. B. HENRY 1,874,749

I DUPLICATING ATTACHMENT FOR TYPEWRITERS Filed Oct. 11, 1930 4Sheets-Sheet 1 WITNESSES OR jeulahlouisefisnr BY w M I ATTORNEYS Aug.30, 1932. B HENRY 1,874,749

DUPLICATING ATTACHMENT FOR TYPEWRITERS Filed Oct. 11. 1950 4Sheets-Sheet2 E T Tl .i r": '7""-. F E

' l ATTORNEYS WITNESSES Aug. 30, 1932. L HEN Y 1,874,749

DUPLICATING ATTACHMENT FOR TYPEWRITE'RS Filed Oct. 11, 1950 4Sheets-Sheet 3 INVENTOR fieulafiLouiseHeruy ATTO R N EYS Aug. 30, 1932.B. HENRY 1,874,749

DUPLICATING ATTACHMENT FOR TYPEWRITERS Filed Oct. 11. 1930 4Sheets-Sheet 4 IIHI' 5i! IIIIIIIHIHIIHIME'IIIII bnanmmzlllnh lNVENTpRfiealalozawefieaiy BY '"m a Mu; 40 ATTORNEYS Patented A... 30, 1932BE'ULAE LOUISE HENRY, OF NEW YORK, 11'. Y.

. nurmcnrme L'ITACmNT roa m Application and ombu- 11, mo. Serial No.488,074.

invention relates to a duplicating attachment for typewriting machineswhich is designed and adapted to make two or more original typewrittencopies simultaneously 5! without the use of the usual carbon sheets.

One of the objects of the invention is to provide an improved form ofattachment of the indicated character whereby an auxiliary or extra inkribbon may be moved orswung 1 into and out of'registry with the typingor printing line of the platen longitudinally thereof forthe statedpurpose. A Another object of theinvention is to provide an attachment ofthe indicated character embodying means of improved construction andoperation for feed ng an auxiliary or extra ink ribbon.

The invention further resides in the combinjations, particularconstruction and operation ofthe parts hereinafter fully described andillustrated in the accompanying drawin s,in which: p, igure 1 is a planview of a typewriting "machine with the attachment of the invention :5applied thereto in the writing position, the

machine being shownconventionally. Y

- Figure 2 is a front view.

Figure 3 is aside view of the upper part of the machine, the attachmentbeing shown in the writing position in full lines and up out of thewriting position in dotted lines. Figure 4 is an enlarged transversesection showing the relation of the ink ribbons, three sheets of paper,the platen, paper guiding and feeding means, and illustrating themaniier in whichthreeorigihal typewritten copies In? be madesimultaneously. F igure 5 is a section on the line 5-5 of Figure 6 is aview similar to Fi 5 but showing a change inthe relation 0 certainparts. Figure 7 is a perspective view of the main part of the attachmentitself.

Figure 8 is a section on the line 8-8 of Figure 10..

Figui'e 9 is a view similar to Figure 8, with the ribbon spool removed.

Figure 10 is an axial section through one 50 of the ribbon spoolassemblies.

ed on the carriage 12, which rolls co-operate 1928, Serial No. 323,346.The sheet guiding Figure 11 is a section on the line 11.-11 of igure 12is a fragmentary side view and section of the assembl shown in Figure10.

The attachment 0 the present invention hereinafter to be fully describedis applicable to a-typewriting machine of standard construction andoperation without alteration or modification to any of its parts.

The typewriting machine will include the usual typing mechanism,including type bars and key levers 10 and their keys 11; platen carnage12; revoluble platen 13 on the carriage; the usual ink ribbon 14 withmechanism to feed said ribbon as the. carriage is moved back and forth;and a line spacing mechanism which operates in conjunction with theplaten. 13 and sheet guiding and feeding mechanism. The last mentionedmeans includes a curvedflexible metal plate 15 fastened at opposite endsto the carriage 12 in-relation to the platen 13. The plate 15 has theusual openings therein to receive pressure rolls 16 mount- 76 with theplaten 13 to impart movement to the sheets of'pa-per in the rotation ofthe platen. I The particular guide plate 15 is disclosed in my'copending application filed December 3,

and feeding means also includes the usual paper guide rests Hand 18 onthe carriage 12, and guide roll 19 supported by arms 20' pivotallyconnected as at 21 with the lower end of the rest plate 17.

The attachment of the present invention includes a frame 22 comprisingarms 23 connected together by a cross rod 24., Use is made of attachingplates 25 which are adapted to be secured to the carriage 12 byfastening elements formin parts thereof. The

plates 25 are arran e respectively on opposite ends of the carr1age'12,and the rear ends of the arms 23 are pivotally connected respec tivelywith said plates 25. Each arm 23 is connected with its plate 25 by apivot bolt 26.

A coil spring 27 surrounds the late between a washer and nut 28 on the.be t 26 and the plate 25. The plate 25 has a groove 29 which receivesarib 30 on the arm=23. The spring position. A casing 31 is secured to thefront end of each one of the arms 23. The casing 31 consists of an uppersection 32 and a lower section 33 complemental to the upper section 32.These casing sections are circular in cross section. The upper casingsection is secured as at 34 to-the related arm 23. The lower casing,section 33 fits on the lower open end of the upper casing section 32 andisdetachably secured thereto by suitable spring catches 35 arrangedrespectively on opposite sides of the lower casing section 33. Thecatches 35 are adapted to be manipulated by the thumb and forefinger ofone hand for the purpose of associating the lower casing sectionwith theupper casing section or for' detaching the same therefrom. Each catch 35engages a projection 36 on the casing section 32.

There 'is provided an auxiliary or extra ink ribbon 37 which is wound onspools 38,

there being one spool 38 arranged within each casing 31. The lowersection 33 of each casin 31 carrie a spindle or arbor 39, the same belngfreely. rotatable with respect thereto. The lower end of the spindle 39is journaled the casing section 33. The lower end of the spindle 39 hassecured thereto a knurled disk 41 for manually rotating the spindle andalso serves to prevent theupward axial movement of the spindle. Thespindle 39 is pro vided with a brake disk 42 which rests in contact withthe casing section 33. The disk 42 has an upstanding pin 43, receivablein a hole in the related spool 38 when the latter is arranged on theupper end of the spindle 39.

' ,Each spool 38 is therefore rotatable with its spindle 39 and may bereadily removed therefrom when the casing section 33 is detached fromthe section 32.

Means is provided for guiding the ribbon 37 from the spools 38lengthwise of the platen 13 in registry with the typing line of theplaten, when the frame 22 is in the down or writing position it beingunderstood that the ribbon spools 38 as secured to the frame 22 will belocated respectively near the op- 'posite ends of the platen 13 when theframe 22 is in the writing position. The said ribbon guiding meansconsists of a guide roll 44 on each of the upper casing sections 32.When the frame 22 is in the down or writing position a portion ofthe'auxiliary ribbon 37 will be disposed between thegink ribbon 14 andthe platen 13 in spaced relation thereto.

In order to rotate each ofthe spindles 39 downwardly projecting lug 49,and an up-.

wardly projecting guide member which limits the pivotal movement of thepawl 46 away from the ratchet wheel 45. Turning movement of the lever 48in a clockwise direction is limited by a downwardly projecting Pi l 51Onathe casing section 33. The lever 48 is under the'influence of atension spring 52 surrounding the spindle 39 and having one end thereofconnected with the bracket 40 as at 53 and its opposite end connectedwiththe lever 48 as at 54. A trip 55 is provided for each lever 48 tooperate the same as the carriage 12 is moved to the right'at thecompletion of the writing on a single line. The trip 55 is pivotallymounted on the frame of the machine in the path of movement of therelated lug 49 and is under the influence of a coil spring 56 whichreturns it to a normal position in contact with a stop pin 57 on theframe of the machine. As the lug 49 encounters the .trip 55 as thecarriage 12 is moved to the right, the spindle 39 will be turned causingits related spool 38 to turn with it, thereby causing the ribbon 37 tomove one degree. I moves to the left, the lug 49 will ride idly actionof the spring 56, the lever-48 thereby remaining inactive withoutcausing movement ofthe ribbon 37. A reversing cam le- 'ver 60 isconnected with eachspindle 39 and serves to hold the pawl ,46 out ofengagement with the teeth of the related ratchet wheel 45. It willtherefore be understood that means is provided for controlling themovement of the ribbon 37 to be wound on oneor the other of the spools38 by merely reversing the positionsof the lever 60 to disengage one spawl 46 and to re-engage the other pawl 46. In accordance with anotherfeature of the invention there is provided a brake band 61' in.conjunction with the disk 42 in each casing 31. One end of the'band 61is secured as at 62 to the lower section 33 of thecasing, and itsopposite end carries a set screw 63' which is in threading engagementwith the secured end of the band to retain the band in frictionalengagement with the disk 42. Thus provision is made for retaining theportion of the ribbon 37 between the spools 38 in a taut condition atall times. i

In order to steady the frame 22 when it is in the down or writingpositionthere is provided means in the form of a grooved ring 64 on thespindle of the platen 13. The right hand arm 23 of the frame is receivedin the groove of the ring 64 to steady the frame and When the carriage12 3.1 in a bracket 40 secured to the underside of over the trip 55which'will yield against the 0 Y prevent any vibration or movementlaterally in a horizontal direction.

From the foregoing it will be apparent that when it is desired to makethree original typewritten copies simultaneously in the usual operationof the keys 11, the frame 22 may be swung to the down or writingposition which will bring a portion of the ribbon 37 between the ribbon14- and the cylindrical face of the platen 13 in registry printing lineof the platen. Three sheets of paper are then arranged as follows,namely, two sheets are arran ed between the roll 19 and the plate 18 anwill be guided by the plates17 and 18. By rotating the platen 13 in theusual manner these two sheets will be ribbons 14 and 37. The machine maythen be operated in the usual manner, and as a result three originaltypewritten copies will be produced simultaneously. The typewriting willoccur on the front faces of the first and third sheets, and on the rearface of the middle sheet. It is to be understood that the middle sheetof paper is preferably transparent so that the typewriting thereon maybe read through thepaper. It will be under stood that the frame 22 maybe swung up out of the writing position to the posltion shown in dottedlines in Figure 3. The machine may then be operated to produce a singleoriginal co y, and, if desired, carbon copies may be pro need by meansof theusual ribbon 14.

What is claimed is: v Y 1. In a typewritmg machine, the combination witha platen and its carriage, ofa swinging frame on said-- carriage, ribbonspools mounted onsaid frame so as to be disposed respectively nearopposite ends of the platen when the frame is in a down position,

means on the frame to guide a ribbon from said spools lengthwise of theplaten in registry with the typing line thereof when said frame is inthe down position, and a grooved ring on the spindle of the platenengage-v able by the frame to steady said frame while in its downposition.

2. a typewriting machine, the combination with a laten and its carriage,of a swingable rib n-spool carrying frame on said carriage, coactingmeans .on said carriage and frame to releasably hold the frame up out ofa writing position, said frame being swingable into a down or.writingposition, and a grooved ring on the spindle of the with the pllatenengageable by the frame to steady said ame while in the writin os'ition.

3. An attachment of the c ass described in-.

cluding a frame adapted to be swingably mounted, a ribbon-spool casingsection secured to each end of'said frame, .and an assembly consistingof a second ribbon-spool casing section adapted to be associated withthe first casing section, ribbon-spool rotatmg means on sa1d secondcasing section, and

'means to detachably secure said second casing section to the firstcasing section.

4. An attachment of the class. described including a frame, aribbon-spool casing sec tion secured to and dependm from each end of theframe, and an assemb y consisting of a second ribbon-spool casingsection adapted to-be associated with said first casing section,ribbon-spool rotating means on said sec ond casing section, and means todetachably secure said second casing section to the first casingsection.

5. An atta hment of the class described including a ,frame, ribbon-spoolcasin sec tion secured to and dependin from eac end" of the frame, andan assemb y consisting of a a second ribbon-spool casing section adaptedto be associated with said first casing sectlon,

ribbon-spool rotating means on said second casing section, and means todetachably se cure said second casing section to the first casingsection, said ribbon-spool rotating means including a spindle freelymounted for rotation on said second casinglsection'.

6. An attachment of'the class described including a frame, upperribbon-spool casing sections respectively secured to' and depending fromt e opposite ends of said frame,

a lower ribbon-spool casing for eachof'said upper caslng sections, meanson each lower casing section adapted to be 0 rated to cause a ste bysteprotation of a l'lbbOIl-SPOOI a plie to said means, and means todetachably secure each lower casing section to the upper casing. sectionrelated thereto. Y

7.An attachment of the class described including a frame,uplperribbon-spool casing-sectlons-respective secured to and dependingfrom the opposlte ends of said fram 5 a lower ribbon-spool casing foreach of said upper casing sections, means on each, lower casing sectionadapted to be operated to cause a step by step rotation of aribbon-spool applied to said means, means to detachably secure eachlower casing section to the upper casing section related thereto, andribbon guiding means on each of said-upper casing sections.

- 'BEULAH LOUISE HENRY.

